With Veritas, you want to make sure hardware compression is enabled and play
with the buffer and block sizes a bit under the device options.
I think the default is 32K.


----- Original Message ----- 
From: "Jasa, Ken" <[EMAIL PROTECTED]>
To: "Exchange Discussions" <[EMAIL PROTECTED]>
Sent: Friday, September 19, 2003 11:10 AM
Subject: RE: Not using BLB, But getting really slow backups.


We are using a Compaq TL891DLX Minilibrary with 2 DLT 40/80 drives.

We were getting backup speeds of around 350MB / Min at one point.


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Andy David
Sent: Friday, September 19, 2003 9:53 AM
To: Exchange Discussions

What tape drive are you using?

----- Original Message -----
From: "Jasa, Ken" <[EMAIL PROTECTED]>
To: "Exchange Discussions" <[EMAIL PROTECTED]>
Sent: Friday, September 19, 2003 10:48 AM
Subject: Not using BLB, But getting really slow backups.


Hello,

Veritas 9 - were using version 8 and getting the same problem.
Exchange 5.5, NT4 SP6a

We can not seem to get better then 100 MB / minute backing up the
Exchange servers. using the Exchange agent. Many nights lately it is
much worse.

The NICs and ports on the switch have all be set to 100/full.
IS Maintenance is from 4am - 7am.
Ensured that Trend Server Protect is not doing any scheduled scans and
that realtime scans exclude Exchange directories.

The databases on the 2 servers are not big:
One is 25 GBs with 7 GBs of whitespace
The other is 17 GBs and only a 300 MBs of whitespace.
Nightly oneline defrags are successful.

Veritas tech notes point to a fragmented database - I don't buy that
unless Exchange IS maintenance is not functioning on both servers. I
also have a few other admins that swear by offline defrags - because
they always seemed to help.

Any ideas where I should be looking?

Thanks
Ken Jasa


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